<span>In September 1957 the school board in Little rock, Arkansas, won a court order to admit nine African American students to Central High a school with 2,000 white students. The governor ordered troops from Arkansas National Guard to prevent them from entering the school. The next day as the National Guard troops surrounded the school, an angry white mob joined the troops to protest the integration plan and to intimidate the AA students trying to register. The mob violence pushed Eisenhower's patience to the breaking point. He immediately ordered the US Army to send troops to Little Rock to protect and escort them for the full school year.
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I'm not sure but probably A.
Answer:
American Civil War
Explanation:
The invention of the cotton gin in 1793 solidified the importance of slavery to the South's economy. By the mid-19th century, America's westward expansion, along with a growing anti-slavery movement in the North, provoked a national debate over slavery that helped precipitate the American Civil War
Uncle Tom's Cabin was a novel written by Harriet Beecher Stowe about slavery in the south. When people read it, they started to realize and be informed about what slavery was like, so more people started being opposed to slavery (because before this, people in the north tended to not care) and more people became abolitionists.